Whoa, there! Kaley Cuoco shared a NSFW behind-the-scenes photo of herself with ex-boyfriend Johnny Galecki to Instagram on Friday, November 4, taken on the set of a recent episode of The Big Bang Theory.

“#bts of last nights @thebigbangtheory__ #kaleyspolaroids #corsettook15minstogeton @sanctionedjohnnygalecki,” the 30-year-old actress captioned the image. In it, she dons a low-cut red corset, short black biker shorts and fishnet stockings, while Galecki, 41, wears a leather BDSM-inspired harness and black pants.

The pair, who quietly dated for two years, have remained the best of friends despite calling off their romance more than five years ago. The once offscreen couple did, however, get married during the season 10 premiere of their hit CBS show.

“So sorry to disappoint, but no home wreckers or secret flings going on here,” Cuoco captioned a photo of the pair sitting next to each other on a bench, grinning and giving each other a fist bump. “Me and @sanctionedjohnnygalecki are just the best of buds – Leonard and Penny will have to suffice!!!”